Clutch for wire-drawing machinery.



Patented Nov. 20, I900;

J. w. HAWKINS. CLUTCH Fon WIRE DRAWING MACHINERY.

(Application filed Mar 12, 1900.

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No. 662,270. Patented Nov. 20, I900.

J. W. HAWKINS.

CLUTCH FUR WIRE DRAWING MACHINERY.

(Application filed Mar. 12, 1900.

2 Sheets-sheaf 2.

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JOHN W. HAWKINS, OF CUYAHOGA FALLS, OHIO.

CLUTCH FOR WIRE-DRAWING MACHINERY.

SPECIFICATION forming part of Letters Patent No. 662,270, dated November 20, 1900. Application filed March 12, not. Serial no. 8,370. ct. model.)

To all whom it may concern:

Be it known that I, JOHN W. HAWKINS, a citizen of the United States, residing at Guyahoga Falls, in the county of Summit and State of Ohio, have invented a certain new and useful Improvement in Clutches for Wire-Drawing Machinery, of which the following is a specification.

. My invention has a general relation to improvements in wire drawing machinery, and it has especial relation to improvements in clutches for turning the drums. Heretofore these clutches have been attached rigidly to the drum, and as a consequence when the wire has been grasped by the clamps and the drum put in motion the starting of the wire is accompanied by a sudden and severe shock that results frequently in fearing the clamp loose, breaking the wire, and sometimes the machinery, that might be obviated if the drawing Were arranged to commence gradually.

The object of my invention is to overcome these difficulties; and to that end myinvention consists in the peculiar and novel construction, arrangement, and combination of parts hereinafter described and then specifically pointed out in the claim, reference being had to the accompanying'drawings, forminga part of this specification.

In the accompanying drawings, in which similar reference-numerals indicate like parts in the different figures, Figure 1 is a Wiredrawing bench and drum provided with my improved clutch; Fig. 2, an end view of the same with the drum and its clutch member removed; Fig. 3, a plan, enlarged, of the drum to illustrate the operation of the clutch; Fig. 4C, a section of Fig. 3 at the line m a; Fig. 5, a section of Fig. 3 at the line a z; and Figs. 6, 7, and 8, an end elevation, an elevation looking from the center of the drum, and an inverted plan, respectively, of the movable lugcarrying plate, hereinafter described.

Referring to the figures, 1 is a bench in which is the-line-shaft 2, bearing a bevel-gear 3, that meshes in a larger bevel-gear 4 on a Vertical shaft 5, that bears the head 6, constituting the lower member of the clutch. This head bears in its upper face two lugs 7, projecting above the face, adapted to engage lugs on the under face of the drum. The drum 8 is externally of the usual form and fits freely on the upper end of the shaft 5 and has the usual clamp 9 to grasp the end of the wire to draw it through the die 10; but its internal structure is different and peculiarly formed, as hereinafter described. In a metallic frame (shown in dotted lines in Figs. 1 and 2) in the bench 1 is pivotally mounted a forked lever 11, having its forked ends turned up and rounded and arranged to engage and raise the drum 8 to release it from the lower clutch member. The lever 11 is moved by a link 12 and lever 13 in the bench 1. As thus far described the apparatus does not materially diifer from the machines in common use for the purpose. In the lower plate of the drum 8 and diametrically opposite in the two quadrants between the spokes 14 17 and 15 16 are openings 18 19, whose curved sides are concentric with the drum and whose ends are radial thereto. Each spoke 14 and 16 has an opening 20 adjacent to the bottom plate of the drum to form a recess for a spring and outside and immediately opposite it a lug 21 to constitute an abutment for that spring. Above these openings in the spokes 14l and 16 are flanges 22 as Wide as the openings 18 19 and extending toward these openings. The spokes 15 and 17 are offset at the bottom from the openings 18 19 to form recesses 23 and of the same width as said openings. Between the spokes 14 17 and 15 16 are inner ledges 24 and outer ledges 25 to constitute ways for a sliding plate 26, to be described. This plate 26 (shown in end elevation, elevation looking from the center of the drum, and in inverted plan in Figs. 6, 7, and 8, respectively, as heretofore stated) consists of a curved plate arranged to rest and slide in the ways hereinloefore described and has in its lower face a lug 27 of such size as to freely fit the openings 18 19 radially to the drum, but to allow a short movement along these openings. The lug 27 projects below the bottom plate of the drum sufficiently to engage one of the lugs 7 on the head 6. A plate 28 rests above each plate 26 under each flange 22 and recess 23 to bind each plate 26 from rising, which plates have upturn ed sides provided with bolt-holes, in which is a bolt the head of which rests in a T--shaped socket 29 in the hub of the drum and is secured by a nut and a jam-nut 30. In the recesses 20 are conical volute band springs 31, that rest against the plate 26 and form a cushion against the thrust when the drum first commences its motion after the wire has been clamped, this thrust being in the direction of the arrows 32 in Figs. 3 and 5.

openings having lugs to engage the lugs of the driving-drum, plates to retain said curved plates, T-shaped openings in the hub to retain bolts, and bolts fitted thereto and arranged to be secured in and hold the retaining-plat-es and volute springs in said springrecesses to meet the thrust of said curved plates, substantially as shown and described.

In testimony that I claim the'above I hereunto set my hand in the presence of two subscribing Witnesses.

JOHN W. HAWKINS.

In presence of O. P. HUMPHREY, C. E. HUMPHREY. 

